code: def GetGraph(input1, input2, var):
      """Define graph."""
      add = input1 + var
      mul = input1 * add
      add = mul + add
      add = add + input2
      out = array_ops.identity(add, name="output")
      return out
  
file_path: tensorflow/tensorflow/python/compiler/tensorrt/test/testdata/gen_tftrt_model.py
imports: from tensorflow.python import Session
  from tensorflow.python.compiler.tensorrt import trt_convert
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.saved_model import builder
  from tensorflow.python.saved_model import save
  from tensorflow.python.saved_model import signature_constants
  from tensorflow.python.saved_model import signature_def_utils
  from tensorflow.python.saved_model import tag_constants
  from tensorflow.python.saved_model import utils
  from tensorflow.python.trackable import autotrackable
label_desc: Use image node_id 1 for calling a global function with example usage: GetGraph(input1, input2, var) and returns: out